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math.NA2026
Subset selection for matrices by volume sampling
Ivan Kozyrev, Alexander Osinsky
We address the Subset selection problem for matrices, where the goal is to select a subset of column indices from a \enquote{short-and-fat} matrix $X \in \mathbb{…
math.NA2026
Subset selection for matrices by column exchange
Alexander Osinsky, Ivan Kozyrev
The paper considers the problem of finding a submatrix in a matrix , such that the spectral or Frobeniu…